Warp beam for looms



y 1951 w. A. BLANCHARD 2,554,085

WARP BEAM FOR LOOMS Filed July 17, 1948 BNVEN'TOR WILLIAM A. BLANGHARD.

ATTGRNEY Patented May 22, 1951 UNITED" STATES u OF F l'fi.

WA'RPBEAM FOR EOOMS William A. Blanchard, Mill-bury; Masszyassignor toCrompton' & Knowles Loom Works, Worcester, Mass, a corporation .of"Massachusetts Application-July 17, 1948;"SerialNoZ-39310 19..Claims.z(-Cl. 242-124)- This invention relates to improvements-in warp beams andit is the general objectoftheinvention to provide a beamheadwhich iscompact and so constructed-that the warp engaging flange can be-mountedaccurately on and heldfirmly to the beam barrel.

The warp of -a loomis wound on a so-called beambetween heads or'flangeson a barrel. The beam is rotatably mounted so that it canturn duringloom operation to deliver the warpfor the weaving operation. When largediameters of warp" are required considerable difficulty iseX- periencedin holding thewarp heads firmly to the bar-reland-also keepctheirwarpengaging surfaces true-with-respect to the axis of thebarrel.

It is an important object of the present invention to provide awarp'head constructed essentially of I two parts or members-havinginterengaging conical surfaces which can bedrawn to-' gether to compressone of the parts-against the barrel and wherein the warp engaging memberderives support from the member on the barrelto resist deflection as thediameter ofthe. warp increases during the windingoperation;

It is a further? object of theiinven'tion to pro-' vide aclampingimember having. 2. preferably conical compressible sleeveeXtendingalongJthe bar rel :for compression by a" comple'mentarily:formed part .iof. the: warp iflangez and having also 'a "rim orperiphery to engage .-.thet.warp flange at an appreciablev distance.from thelsurface'of the barrel.

It is'a'further object of. the inventionto make the two members ofv thewarp iheadin suchv manner-thatlthey canfbeassembled in but one relativeangular position;

It is a. still furtherobjectofthe invention to provideya warp. headincluding a clamp member and a warp engagingmembereach having coni-j calsurfaces I which are drawn-along each other and are guided by mutuallyengaging surfaces to maintain the .warp engagingmember in correctposition with respect to the barrel during the assembly of the head;

With these andzother objects in. view which will appear astheidescription proceeds,;the invention resides in the combination andarrange- Fig. 4 is afragmentary side elevation looking. intheidirection-of arrow. 4, Fig.3,

Fig. 5 is a transverse verticalrisection.onzline 5+5, Fig;v 3,

Fig.z:6 is an 'tenlargedsection on line 6-6, Fig.- 4, and

Fig; 7 is a viewsimilar-to a portion of Fig1i3 but showing a'modifiedform of the invention; 1

Referring to Figs-l to 6 which sh0wthe= pre'-? ferred form -'of theinvention, the beam: com-i prises a 1 cylindrical preferablytubularbarrel I tl which in the preferredform is smooth throughout titslength. The warp .(notashown is .wound on- 1 the. barrel. betweent.twoheads H, and since they are alike only one of themvwill be describedin detail; namely, thehead at the left endof the barrel as viewedin'Fig. 1.

The head: is formed of .two..par-ts. .or members onexof iwhichis a warpengaging; member II and theother .:0f':which is a clamping member I 2.Thelatter is formedwith .a disk or rweb'tl3ilthe outer:.part of1which:is .formedpwith a flanges having. a preferably cylindrical rim orperiphery l5. Integraliiirith the web :13 isa conical huhor sleeve :16iextending 1 along the barreland. divided into at leastztwo sectors:whichcan be :deflected toward the barrel): As shown in Fig. 5..the :hubhas-:two-tslots:aor:saw cutsvll and i8 which.:di-v Videilthe sleeve H5into two sectors-l9 andrzili The flange :l 4 is provided with a'recess 2l across which. extends .alug.22 inewhich is threadedia spreading'orexpanding screw 23. The left end of the screw;1Fig. .4, abuts azsurface.24 atathe left end of the; recess 2 I, and the flange; is provided witha slot 25whichis open at periphery l5 and maybe .radialtas suggested in'Fig. .4. The slot 25 and screw 23LWhiCh ,extendsacross it are notessential: to certain features of the invention; and can be omittedifdesired.,-.

The warp. head member. 'hasa flat warp engaging surface :30 formed on aflange 3| which has-castintegral therewith a hub .32 formed withaninternal cylindrical surface 33 to engage the .peripheraltcylindricalrim i5 of the clamp member. Extending between'the hub :32 I and theflange 3! are several reinforcing'gussets 34.=

The warp head member H is formed'withan internal conical bore .35 whichextends along and complements an external conical surface 36 on thesleeve 16. Draw screws 3lpass through the flange I4 and are tapped orthreaded as at 38 into the Warp head member vI I. There may be severalofntheseedraw screws.3l as suggested for in-, stance in Fig. 2, and :itwill be noted that they are unevenly distributed angularly around theaxis .of'the: barrel so that there is but one angular position which themembers II and 12 can have with respect to each other. While thisrelationship of the screws is desirable it is not essential in order totake advantage of all the features of the invention. The heads 39 of thescrews 3'! may be housed within pockets 40 of somewhat larger size, assuggested for instance in Figs. 3 and 4.

Separating screws 42 are threaded into the clamping member l2 and havetheir ends adapted for engagement with the head member H, as at 43 (seeFig. 3). Ordinarily these separating screws will be backed off so thatthey do not engage the member H, but when it is desired to separate thetwo members I l and [2 the separating screws will be turned in torelease the conical surfaces 35 and 36.

In the manufacture of the warp head the two members [I and [2 may bedrawn together by tightening the draw screws 3'1 to force the sectors l9and 20 against a stub shaft having the same diameter as that of the beambarrel iii. If screw 23 is used it will be turned to expand surface 15against surface 33. The face 36 is then turned true to the axis of thestub shaft, after which loosening of the screws 23 and 31 andmanipulation of screws 42 will effect separation of the conical surfaces35 and 36, thus permitting removal of the head from the stub shaft (notshown) It is desirable that the two members i l and [2 of the headremain connected to each other by means of the draw screws 3? afterfinishing of surface 38, but it will be understood that this is notessential.

When a warp is to be wound on the barrel l the heads 1-1 will first belocated along the barrel at the required distance apart, the screws 31'being slack to permit end adjustment, and screw 23 being loose. Thescrews 37 are then tightened to force the internal conical surface 35against the external conical surface 36 of the sleeve 16, therebyforcing the sectors I9 and 2f] tightly against the barrel l0. Duringthis relative movement of members H and [2, surface on member l2 guidessurface 33 on member H to prevent twisting thereof. The expansion screw23 will then be turned in such direction as to separate parts 48 and 48of member l2 on the sides of slot to force peripheral rim l5 of flange[4 against the internal surface 33 of the hub 32. The surfaces l5 and 33are preferably cylindrical and concentric with the axis of the barrel,and it will be understood that the concial surfaces are peripherallycoaxial with the barrel. Tightenin of the expansion screw 23 willestablish a tight fit between the flange l4 and the hub 32 so that themember II is supported not only by the sleeve IE, but also by the flangel4. The surface I5 is a considerable distance from the barrel It! aswill be seen in Fig. 3.

As shown in Fig. 1 the barrel in the preferred form of the invention hasa smooth cylindrical surfac which fits the smooth bore of sleeve [5. Theinvention, however, is not limited to a smooth barrel, and in themodified form of the invention the barrel can be provided with screwthreads 5%, as shown in Fig. 7. When screw threads are used on thebarrel I6 the internal bore of the sleeve IE will be similarly threaded,as at El.

From the foregoing it will be seen that the invention provides a compactwarp head occupying a small space along the length of the beam barrelH). The two members H and [2 have coacting complementary tapered orconical surfaces which can be drawn together by drawing means,

such as screws 37, to clamp the sectors l8 and 2!] against the beambarrel by forces transmitted through conical surfaces 35 and 36. Conicalsurfaces 35 and 36 diverge outwardly from the barrel and toward flange[4 of the clamping member. The peripheral rim l5 supports the hub 32 atpoints spaced from the surface of the barrel IS, the clamp member [2 inthis respect affording support for the member ll along spaced zones oneof which is close to the barrel and a conical form and the other ofwhich is spaced from the barrel and preferably of cylindrical form.During the drawing together of the two members of parts H and I2 therelative sliding movement parallel to the barrel [9 of periphery l5 ofthe clamping member flange [4 and surface 33 on hub 32 guides the warphead member H to keep it from twisting or moving in such manner that thesurface 30 will become oblique with respect to the barrel axis. While thexpanding screw 23 and slot 25 can be used as set forth herein to expandthe periphery l5 of the clamping member, they may be omited. When used,however, the expanding screw permits the establishment of a very tightfit between the periphery l5 and the cylindrical surface 33 of the hub32, and this fit together with that existing at the conical surfacesholds the beam head member ll rigidly in position with respect to theclamp member [2.

Having thus described the invention it will be seen that changes andmodifications of the foregoing specific disclosure may be made withoutdeparting from the spirit and scope of the invention.

What is claimed as new is:

1. In a warp beam having a cylindrical barrel, a warp head member havinga flat warp engaging face, a clamping member on the barrel, said membershaving engaging cylindrical surfaces spaced from and concentric with thebarrel and having also engaging conical surfaces coaxial with thebarrel, and means to draw said members together to cause the warp headmember to exert forces through said conical surfaces to force a portionof said clamping member against the barrel, said cylindrical surfacesguiding the head member as the members are drawn together.

2. In a warp beam having a cylindrical barrel, a warp head member havinga flat warp engaging face and having a cylindrical surface concentricwith and spaced from the barrel and having also a conical surfacecoaxial with the barrel, a clamping member on the barrel having acylindrical surface engaging the cylindrical surface of the warp headmember and having also a conical surface complementing and engaging theconical surface of the warp head member, and means to draw said memberstogether to cause the warp head member by forces transmitted throughsaid engaging conical surfaces to force part of the clamping memberagainst said barrel while said cylindrical surfaces move relatively toeach other and guide the warp head member relatively to the clampingmember.

3. In a warp beam having a cylindrical barrel, a warp head member havinga flat warp engaging face and having an internal cylindrical surfaceconcentric with and spaced from the barrel and having also an internalconical surface spaced from and coaxial with the ,barrel, a clampingmember on the barrel having an external cylindrical surface engagingsaid internal cylindrical surface and having also an external conicalsurface coaxial with the barrel'and complementing aasgoea' 51:. andengaging saidihternal conical surfaceaandmeans to draw saidmemberstogetherahd cause the warp *he ad member by forces- 5 transmitted gthrough-saidconical surfaces to force portions of the clampingmemberadjacent-to said-external conical surface against said barrelwhile the cy lindri'calsurfacesguide said-warp head member as thelatteris drawn toward saidclamping member.

4.- In 'awarp beam= having acylindrical barrel, a warphead=member-having a flatwarpengag ingface," a hub-on said memberspacedfromthe bar-rel,=a clamping*mernberonthe barrel-;-a flange forming'part of said clamping -member-'and-'-en-- gaging-said hub;complementary tapered mutuallycngaging surfaces on said members"inclinedoutwardly from the barreltoward saidflange, and--means to drawsaidmembers togethertocause -t-he-warp head member by forces trans mittedthrough said tapered surface to compress portions-of the clamping memberadjacent to the tapered surface'thereof againstthe ba-rrelwhile" saidhub slides along and is guided-'bysaid flange.

5. In 'a" warp beam having a' cylindrical barrel, a'warp'headmember-having a flat- Warp engaging face, a hub extendinglaterally'fromandintegral with said 'member and concentric with andspaced from the barrel, a clamping "member on the barrel hayinga flangeengaging said "hub; a

sleeveintegral with the =flange and extending along the barrel,complementary mutually engagingconical surfaces onthe warp'head memberand saidsleeveyand'means to draw said members together: while"said-flange guides said hub to cause the warp head member 'by' forcestransmitted through'said conicalsurfaces to force said sleeve "againstthe barrel.

6.- In a warp beamhaving a. cylindrical barrel, a warp'head'member'having'a fiat surface .to' en gage the warp andhaving. an integral hub'pro-' vided withaninternalcylindrical surface concentric with andspacedfrom the barrel and having also an internal conical surface coaxial withand spaced fromthe barrel, a clamping member on the barrel havinga-circular 'flangeprovided with/anexternal cylindrical surface engagingsaid internal cylindrical surfacelof the hub, a.,sleeve integralwith'theflange extending along "the'ibarrel'and'having an externalconical surface.engaging"and"complementing said inr ternal'conicalsurface of the head member, and screw means for drawing saidmembers together while the cylindrical surfaces engage each other toguide the warp head member relatively to the clamping member andeffective to cause said warp head member by forces transmitted throughsaid conical surfaces to force said sleeve against said barrel.

7. In a warp beam having a barrel, a warp head member having a flat Warpengaging face, a clamping member on the barrel, said members havingmutually engaging guide surfaces slidable relatively to each other in adirection parallel to the barrel, said members having also mutuallyengaging tapered surfaces, and means to draw said members together tocause the warp head member to exert forces through said tapered surfacesto force a portion of said clamping member against the barrel while saidguide surfaces slide relatively to each other.

8. In a Warp beam having a barrel, a Warp head member having a flat warpengaging face, a clamping member on the barrel, said members havingmutually engaging guide surfaces slidable relatively to each other in adirection parallel to the barrel,- said members ha'ving also mutuallyengaging "surfaces I tapered outw'ardly from the barrel in a directionaway from said warpengaging face, and means to draw said memberstogetherto cause the Warp headmember to 1 exert forces :through said taperedsurface to :force a portion of said 'clamping member=against the barrelwhile said guide-surfaces slide relativel-yto each other, saidmeans-comprising a plurality of screws extending throughthe clamping-member and threaded into thewarp'head -member and-- disposednon-uniformly: around the axis of the barrel.

9. In a-warp head member fora warp beam having a barrel anda clampingmember provided with cylindrical and conicalsurfa'ces spaced-from andcoaxial I with the barrel, said head member ineluding a warpengagingflange and having i a cylindrical surface to engagethe-cylindrical sur face of the clamping member :and 'having also.:a

conical surface to engage the conicalsurface of' the clamping member10..In a warp head member for a-warp beam having a barrel and aclampingmember thereon: formed with an external cylindrical surface andan external conical surface,'both of said-surfaces being coaxialwithiand spaced fromthe barrel, said head member comprising awarp'engaging flange, a hub integral with the: flange having an internalcylindrical surface to engage the external cylindrical surface of i theclampin member; and said member having an internal conical surfa'ce toengage the conical surface of the clamping member.

11. A clamping member for a warp beam hav ing a barrel and a-warphead-member formed barrel, said clamping member 'beingformed withanexternal cylindrical surface to engagethe internal cylindrical surfaceof the'warp head member and havinga sleeve formed with' an-ex-ternalconical surface to engage the internal conical surface of the warpflange.

13. In a warp beam having a cylindrical barrel, a warp engaging headsurrounding the barrel and having a cylindrical surface concentric withand spaced from the barrel and having also a conical surface coaxialwith and spaced from the barrel, a clamp member having a circular flangelocated within the cylindrical surface and supported by the barrel andhaving a conical sleeve complementing and engaging the conical surfaceon said Warp engaging member, means drawing said members together tocause said sleeve to be forced against the barrel by forces transmittedfrom the head through the conical surfaces, said flange having a partthereof formed to be expansible for engagement with said cylindricalsurface on the head, and expanding means forcing said expansible part ofthe flange into tight holding relation with respect to said cylindricalsurface.

14. In a warp beam having a cylindrical barrel, a warp engaging headhaving a hub concentric with and spaced from the barrel and having alsoa conical surface coaxial with the barrel, a clamp member having aconical surface complementing and engaging the conical surface on thewarp head, a circular flange forming part of said clamp member locatedwithin the hub and having a part thereof expansible toward the hub,means drawing said warp head and clamp member together to cause the warphead acting through said conical surfaces to force a part of theclamping member against the barrel, and means carried by the clampmember expanding said expansible part of the flange into close fittingrelation with respect to the hub.

15. A clamping member for a warp beam having a barrel and a warp headmember thereon formed with a hub spaced from and concentric with thebarrel, the head member having a conical surface coaxial with thebarrel, said clamping member comprising a circular flange formed with asurface to engage the hub and having an open slot therein extendinginwardly from the periphery of the flange, expanding means on theclamping member engaging parts of the flange on opposite sides of theslot effective to move said parts away from each other, and a sleeveintegral with the flange to extend along the barrel and having a conicalsurface to engage the conical surface of the head member.

16. A clamping member for a warp beam having a barrel and a warp headmember thereon formed with a hub spaced from and concentric with thebarrel, the head member having a conical surface coaxial with thebarrel, said clamping member comprising a circular flange formed with asubstantially circular surface to engage the hub and having an open slottherein extending inwardly from the periphery of the flange, anexpanding screw threaded into part of the flange on one side of the slotand extending across the latter and engaging another part of the flangeon the opposite sideof the slot, said screw being turnable in adirection to cause separation of said parts of the flange, and a sleeveintegral with the flange to extend along the barrel and having a conicalsurface to engage the conical surface of the head member.

17. A clamping member for a warp beam having a barrel and a warp headmember thereon formed with a cylindrical surface concentric with thebarrel and having a conical surface coaxial with the barrel, saidclamping member having parts defiectable toward the barrel by forcestransmitted through said conical surface and having other parts formedwith a periphery expansible to engage said cylindrical surface.

18. In a warp beam having a cylindrical barrel, a warp head memberhaving a flat warp engaging surface surrounding the barrel, a hub onsaid member spaced from the barrel and concentric therewith, a clampmember on the barrel secured to said head member and having a circularperiphery lying within the hub and having a slot extending inwardly fromsaid periphery toward but terminating short of said barrel, andexpanding means screw threaded into a part of said clamp member on oneside of said slot and extending across the latter and abutting anotherpart of the clamp member on the opposite side of said slot and effectiveto separate said parts of the clamp member and force said periphery intotight holding relation with respect to said hub.

19. In a warp beam having a cylindrical barrel, a Warp head memberhaving a flat warp engaging surface surrounding the barrel, a hub onsaid member concentric with and spaced from the barrel, a clamp memberon the barrel within said hub secured to the head and having a circularperiphery for engagement with the interior of said hub and having a slotextending inwardly from the hub toward but terminating at a point spacedfrom the barrel, and an expanding screw extending transversely of theaxis of the barrel screw threaded into a part of said clamp member atone side of the slot and extending across the latter and abuttinganother part of the clamp member on the opposite side of said slot andefiective when tightened to expand said periphery by separation of saidparts of the clamp member circumferentially of the latter to force saidperiphery into tight holding relation with respect to the hub.

WILLIAM A. BLANCHARD.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 321,635 Palmer July 7, 1885927,005 Sands July 6, 1909 2,144,070 Leinbach Jan. 17, 1939

